Container truck stop on the door seal or dock shelter forming a sealing effect,most suitable for wall-through dock .Temperature-keeping, environmental,water-tight, dust-insulating,insect-insulating.Ensure the loading&unloading is not affected by the weather and increase the loading&unloading efficiencyEspecially suitable for refrigeration room and those area where there is big temperature difference between inside and outside.Material: industrial fibre,PVP water-proof material, quality sponge.Different size are available: can match different size of door hole(the standard door-hole size is:2.4x2.7m/2.6x3.0m).